Add support for GL_CHROMIUM_pixel_transfer_buffer_object.

webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
 #include <GLES2/gl2.h>
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES 1
 #endif
@@ skipping 1625 matching lines @@
   gl_->PushGroupMarkerEXT(0, marker);
 }
 
 DELEGATE_TO_GL(popGroupMarkerEXT, PopGroupMarkerEXT);
 
 DELEGATE_TO_GL_2(bindTexImage2DCHROMIUM, BindTexImage2DCHROMIUM,
                  WGC3Denum, WGC3Dint)
 DELEGATE_TO_GL_2(releaseTexImage2DCHROMIUM, ReleaseTexImage2DCHROMIUM,
                  WGC3Denum, WGC3Dint)
 
+void* WebGraphicsContext3DInProcessCommandBufferImpl::mapBufferCHROMIUM(
+    WGC3Denum target, WGC3Denum access) {
+  ClearContext();
+  return gl_->MapBufferCHROMIUM(target, access);
+}
+
+WGC3Dboolean WebGraphicsContext3DInProcessCommandBufferImpl::
+    unmapBufferCHROMIUM(WGC3Denum target) {
+  ClearContext();
+  return gl_->UnmapBufferCHROMIUM(target);
+}
+
 GrGLInterface* WebGraphicsContext3DInProcessCommandBufferImpl::
     onCreateGrGLInterface() {
   return webkit_glue::CreateCommandBufferSkiaGLBinding();
 }
 
 void WebGraphicsContext3DInProcessCommandBufferImpl::OnContextLost() {
   // TODO(kbr): improve the precision here.
   context_lost_reason_ = GL_UNKNOWN_CONTEXT_RESET_ARB;
   if (context_lost_callback_) {
     context_lost_callback_->onContextLost();
   }
 }
 
 DELEGATE_TO_GL_3(bindUniformLocationCHROMIUM, BindUniformLocationCHROMIUM,
                  WebGLId, WGC3Dint, const WGC3Dchar*)
 
 DELEGATE_TO_GL(shallowFlushCHROMIUM, ShallowFlushCHROMIUM)
 
 DELEGATE_TO_GL_1(genMailboxCHROMIUM, GenMailboxCHROMIUM, WGC3Dbyte*)
 DELEGATE_TO_GL_2(produceTextureCHROMIUM, ProduceTextureCHROMIUM,
                  WGC3Denum, const WGC3Dbyte*)
 DELEGATE_TO_GL_2(consumeTextureCHROMIUM, ConsumeTextureCHROMIUM,
                  WGC3Denum, const WGC3Dbyte*)
 
 }  // namespace gpu
 }  // namespace webkit